diff --git a/hpath-directory/hpath-directory.cabal b/hpath-directory/hpath-directory.cabal
index 5e4e66d..113f911 100644
--- a/hpath-directory/hpath-directory.cabal
+++ b/hpath-directory/hpath-directory.cabal
@@ -52,6 +52,10 @@ library
                        , unix                >= 2.5
                        , unix-bytestring     >= 0.3
                        , utf8-string
+  if impl(ghc < 8.0)
+    build-depends:
+        fail >= 4.9
+
   hs-source-dirs:      src
   default-language:    Haskell2010
   default-extensions: PackageImports